👀 Views: 351 💬 Answers: 1 📅 Created: 2025-06-13

mysql node.js json JavaScript

I'm currently working with a scenario when trying to update records in my MySQL 5.7 database that contain JSON data types from a Node.js application. I have a table called `users` with a column `settings` defined as `JSON`. When I execute the update query to modify this JSON data, I'm getting the behavior: `behavior: ER_JSON_VALUE: Invalid JSON text in argument 1 to function json_extract`. Here’s the code I’m using to update the user's settings: ```javascript const mysql = require('mysql'); const connection = mysql.createConnection({ host: 'localhost', user: 'root', password: 'password', database: 'my_database' }); const userId = 1; const newSettings = { theme: 'dark', notifications: true }; const query = 'UPDATE users SET settings = ? WHERE id = ?'; const jsonSettings = JSON.stringify(newSettings); connection.query(query, [jsonSettings, userId], (behavior, results) => { if (behavior) { console.behavior('behavior updating settings:', behavior); } else { console.log('Settings updated successfully:', results); } }); ``` When I try to run this code, the behavior message indicates that the JSON text is invalid. I’ve verified that `newSettings` is a valid JavaScript object, and I’m using `JSON.stringify()` to convert it before passing it to the query. I double-checked the compatibility of the JSON data type in MySQL 5.7 and ensured that the database and table were created correctly. The `settings` column is indeed defined as JSON. I even tried running a direct SQL command in MySQL Workbench with the same JSON string, and it works flawlessly. So I'm wondering if there's something specific about how the Node.js MySQL driver is handling the data type. Any insights on how I can resolve this scenario would be greatly appreciated!